Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8739776 | Solar light condensing system | Nobuyuki Tsutsui, Suminao Tomoyasu | 2014-06-03 |
| 8605273 | Solar light tracking sensor direction setting/measuring/re-adjusting method and solar light collecting device | Kounosuke Oku, Kazumasa Fujiwara, Takashi Kawaguchi | 2013-12-10 |
| 8355142 | Mounting position measuring device | Kazumasa Fujiwara | 2013-01-15 |
| 8147076 | Beam-down type solar ray lighting device | Hiroo Inoue, Takashi Kawaguchi, Yuzuru Hamada | 2012-04-03 |
| 4774470 | Shield tunneling system capable of electromagnetically detecting and displaying conditions of ground therearound | Takamura Takigawa | 1988-09-27 |